Naik, V., V. Nair, and G. S. “Effects of Short Term Inspiratory Muscle Training in Hospitalised Chronic Obstructive Pulmonary Disease Patients - An Experimental Study”. Journal of Ecophysiology and Occupational Health, vol. 21, no. 2, June 2021, pp. 72-76, doi:10.18311/jeoh/2021/27143.